alter.
To change the form or structure of.
Meaning & usage
To change the form or structure of.
To become different.
To tailor clothes to make them fit.
To castrate, neuter or spay (a dog or other animal).
To affect mentally, as by psychotropic drugs or illness.
Where this word comes from
From Old French alterer (French altérer), from Medieval Latin alterāre (“to make other”), from Latin alter (“the other”), from al- (seen in alius (“other”), alienus (“of another”), etc.; see alias, alien, etc.) + compar. suffix -ter.
One of the personalities, identities, or selves in a person with dissociative identity disorder or another form of multiplicity.
Where this word comes from
Probably from alter ego.
Misspelling of altar.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.